The driver, a 21-year-old man from the Maesycwmmer area, was taken to hospital and remains in a stable condition.

Gwent Police Area Support Unit Sergeant Robert Ball said: “We are appealing for witnesses to this collision, and I would ask anyone who saw this incident to contact us, if they haven’t already, or anyone who saw this vehicle beforehand in the Caerphilly or Blackwood area to call us on 101 quoting log number 99 13/9/15.”